945526-43-2

Name	[4-t-Butylphenyl]-N-(4-imidazol-1-yl phenyl)sulfonamide, Benzenesulfonamide, 4-(1,1-dimethylethyl)-N-[4-(1H-imidazol-1-yl)phenyl]-
Synonyms	ISCK03 C-KIT INHIBITOR II [4-t-Butylphenyl]-N-(4-imidazol-1-yl phenyl)sulfonamide 4-tert-butyl-N-(4-imidazol-1-ylphenyl)benzenesulfonamide Benzenesulfonamide,4-(1,1-dimethylethyl)-N-[4-(1H-imidazol-1-yl)phenyl] [4-t-Butylphenyl]-N-(4-imidazol-1-yl phenyl)sulfonamide, Benzenesulfonamide, 4-(1,1-dimethylethyl)-N-[4-(1H-imidazol-1-yl)phenyl]- [4-t-Butylphenyl]-N-(4-imidazol-1-yl phenyl)sulfonamide, Benzenesulfonamide, 4-(1,1-dimethylethyl)-N-[4-(1H-imidazol-1-yl)phenyl]-
CAS	945526-43-2
InChIKey	XQABBHBFHWHMKF-UHFFFAOYSA-N

Molecular Formula	C19H21N3O2S
Molar Mass	355.45
Solubility	Soluble in ethanol or DMSO
Appearance	solid
Color	yellow
Storage Condition	Sealed in dry,2-8°C
Sensitive	Light Sensitive
In vitro study	Pretreatment of 501mel cells with ISCK03 inhibits SCF-induced c-kit phosphorylation dose dependently. ISCK03 also inhibits p44/42 ERK mitogen-activated protein kinase (MAPK) phosphorylation, which is known to be involved in SCF/c-kit downstream signaling. However ISCK03 does not inhibit hepatocyte growth factor (HGF)-induced phosphorylation of p44/42 ERK proteins. ISCK03, a tyrosine kinase inhibitor specific to KIT, prevents survival of CCDC26-KD cells under low-serum conditions. All treated cells exhibits sensitivity to ISCK03 in a dose-dependent manner. After ISCK03 treatment, the survival of KD cells is suppressed to the same level as that of non-KD cells. Conversely, ISCK03 treatment has limited effects on the growth of control K562 and KD clone 3–4 cells under high-serum concentration conditions.
In vivo study	Oral administration of ISCK03 induces the dose-dependent depigmentation of newly regrown hair, and this is reversed with cessation of ISCK03 treatment. The topical application of ISCK03 promotes the depigmentation of UV-induced hyperpigmented spots. Fontana-Masson staining analysis shows epidermal melanin is diminished in spots treated with ISCK03.

Hazard Symbols	Xi - Irritant
Risk Codes	36 - Irritating to the eyes
Safety Description	26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany	1